djvu | 6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7

Analysis

max time kernel
144s
max time network
132s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
25/12/2024, 00:38

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General

Target

JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe
Size

833KB
MD5

879fe8251f7e362c8b786a1a1d03586c
SHA1

2dc5de3cee375f4630e4d70ee371523e93c36f01
SHA256

6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7
SHA512

fc46f174dcde80fe8a4341c778e6dd2d2b7c32cdf8a3cfedc24b88b63dd8ee36d89cae9986d02980ce55c68fa3f282a86d093825ca5fa20bb1879eacadbac70e
SSDEEP

24576:a4OqOuOCUS9cCh+goT9zxRA0EtQflzp9FEitw:aYUe3UgoT9PAbE79FEd

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

http://fuyt.org/lancer/get.php

Attributes

extension
.gtys
offline_id
qwVQoIsE2xLety0oNWloOilSDuIBXJGK86LM3ot1
payload_url
http://zerit.top/dl/build2.exe

http://fuyt.org/files/1/build3.exe
ransomnote
ATTENTION! Don't worry, you can return all your files! All your files like pictures, databases, documents and other important are encrypted with strongest encryption and unique key. The only method of recovering files is to purchase decrypt tool and unique key for you. This software will decrypt all your encrypted files. What guarantees you have? You can send one of your encrypted file from your PC and we decrypt it for free. But we can decrypt only 1 file for free. File must not contain valuable information. You can get and look video overview decrypt tool: https://we.tl/t-fnn5kv33Vv Price of private key and decrypt software is $980. Discount 50% available if you contact us first 72 hours, that's price for you is $490. Please note that you'll never restore your data without payment. Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours. To get this software you need write on our e-mail: [email protected] Reserve e-mail address to contact us: [email protected] Your personal ID: 0439JIjdm

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 15 IoCs

resource	yara_rule
behavioral1/memory/2184-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1780-5-0x0000000001EA0000-0x0000000001FBB000-memory.dmp	family_djvu
behavioral1/memory/2184-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2184-9-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2184-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2600-39-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2600-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2600-55-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2600-54-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2600-57-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2600-61-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2600-73-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2600-70-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2600-72-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2600-74-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu
Djvu family
djvu

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
2812	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\fb5c15a6-2c22-4b4f-a9b0-2c8b7b5eec3a\\JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe\" --AutoStart"	JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe

Looks up external IP address via web service 3 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
3	api.2ip.ua
4	api.2ip.ua
9	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1780 set thread context of 2184	1780	JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe	31
PID 2744 set thread context of 2600	2744	JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe	34

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2184	JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe
2184	JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe
2600	JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe
2600	JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1780 wrote to memory of 2184	1780	JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe	31
PID 1780 wrote to memory of 2184	1780	JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe	31
PID 1780 wrote to memory of 2184	1780	JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe	31
PID 1780 wrote to memory of 2184	1780	JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe	31
PID 1780 wrote to memory of 2184	1780	JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe	31
PID 1780 wrote to memory of 2184	1780	JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe	31
PID 1780 wrote to memory of 2184	1780	JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe	31
PID 1780 wrote to memory of 2184	1780	JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe	31
PID 1780 wrote to memory of 2184	1780	JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe	31
PID 1780 wrote to memory of 2184	1780	JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe	31
PID 1780 wrote to memory of 2184	1780	JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe	31
PID 2184 wrote to memory of 2812	2184	JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe	32
PID 2184 wrote to memory of 2812	2184	JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe	32
PID 2184 wrote to memory of 2812	2184	JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe	32
PID 2184 wrote to memory of 2812	2184	JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe	32
PID 2184 wrote to memory of 2744	2184	JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe	33
PID 2184 wrote to memory of 2744	2184	JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe	33
PID 2184 wrote to memory of 2744	2184	JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe	33
PID 2184 wrote to memory of 2744	2184	JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe	33
PID 2744 wrote to memory of 2600	2744	JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe	34
PID 2744 wrote to memory of 2600	2744	JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe	34
PID 2744 wrote to memory of 2600	2744	JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe	34
PID 2744 wrote to memory of 2600	2744	JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe	34
PID 2744 wrote to memory of 2600	2744	JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe	34
PID 2744 wrote to memory of 2600	2744	JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe	34
PID 2744 wrote to memory of 2600	2744	JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe	34
PID 2744 wrote to memory of 2600	2744	JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe	34
PID 2744 wrote to memory of 2600	2744	JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe	34
PID 2744 wrote to memory of 2600	2744	JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe	34
PID 2744 wrote to memory of 2600	2744	JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe	34

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1780
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2184
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\fb5c15a6-2c22-4b4f-a9b0-2c8b7b5eec3a" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2812
- - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2744
  - - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:2600

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

File and Directory Permissions Modification

T1222

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8B2B9A00839EED1DFDCCC3BFC2F5DF12

Filesize
1KB

MD5
67e486b2f148a3fca863728242b6273e

SHA1
452a84c183d7ea5b7c015b597e94af8eef66d44a

SHA256
facaf1c3a4bf232abce19a2d534e495b0d3adc7dbe3797d336249aa6f70adcfb

SHA512
d3a37da3bb10a9736dc03e8b2b49baceef5d73c026e2077b8ebc1b786f2c9b2f807e0aa13a5866cf3b3cafd2bc506242ef139c423eaffb050bbb87773e53881e

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B46811C17859FFB409CF0E904A4AA8F8

Filesize
436B

MD5
971c514f84bba0785f80aa1c23edfd79

SHA1
732acea710a87530c6b08ecdf32a110d254a54c8

SHA256
f157ed17fcaf8837fa82f8b69973848c9b10a02636848f995698212a08f31895

SHA512
43dc1425d80e170c645a3e3bb56da8c3acd31bd637329e9e37094ac346ac85434df4edcdbefc05ae00aea33a80a88e2af695997a495611217fe6706075a63c58

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12

Filesize
174B

MD5
071f6c96cd38ea431e1154891758d965

SHA1
ec125b460ecc9af8046b3d7e22c7ab8ff799b2a1

SHA256
9f983c1b45c671775ae04c5206557c7387034b292b1d6daeeeed2f1d7fade529

SHA512
c7673731165aebce8e89e07fc5ed9ea3b7a0f96bf8c32869faa0f8935a839fae4579379e3398b363f3d28fa16d1c49efff205bc4e88436b0975dc00d37737963

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

Filesize
342B

MD5
064111d4c0431099f9ba7fc2932216ea

SHA1
b02bed6452324f3a5c87815c6df7ec2d2b15827d

SHA256
e0f6ac95ac1fe746ddaeddc61ced5e01add5622b85e1b254c8c9b01059b7bee3

SHA512
12190c5423c9959ea2f884c0d192536fcea8c47415f8f06e7342b19fa5928dd54cfd3e1e98943101d6ae1d9a1152b721c38222855d123b5d5c59cb46deee14b2

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8

Filesize
170B

MD5
8737f283051a32effb1bf8cc01eb5b50

SHA1
602a9f8a93c0e0befd4a86e5d5ca0a3e9b549bc9

SHA256
674dbc8694b236d8a97460861cc1542b46234f434a699b6ad0ef3d19b1d1faec

SHA512
25b7c867cdc8f8b0a599121fc7329c92209d03f5f7e6502809224d98e76057b9d9589bfd1c7602b04eee42812e2db2f2f05ff81f8f5241b222a8e222397cf541

Download Submit
C:\Users\Admin\AppData\Local\Temp\CabF48C.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\fb5c15a6-2c22-4b4f-a9b0-2c8b7b5eec3a\JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe

Filesize
833KB

MD5
879fe8251f7e362c8b786a1a1d03586c

SHA1
2dc5de3cee375f4630e4d70ee371523e93c36f01

SHA256
6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7

SHA512
fc46f174dcde80fe8a4341c778e6dd2d2b7c32cdf8a3cfedc24b88b63dd8ee36d89cae9986d02980ce55c68fa3f282a86d093825ca5fa20bb1879eacadbac70e

Download Submit
memory/1780-56-0x0000000001EA0000-0x0000000001FBB000-memory.dmp

Filesize
1.1MB

Download
memory/1780-0-0x0000000000340000-0x00000000003D1000-memory.dmp

Filesize
580KB

Download
memory/1780-5-0x0000000001EA0000-0x0000000001FBB000-memory.dmp

Filesize
1.1MB

Download
memory/1780-6-0x0000000000340000-0x00000000003D1000-memory.dmp

Filesize
580KB

Download
memory/1780-1-0x0000000000340000-0x00000000003D1000-memory.dmp

Filesize
580KB

Download
memory/2184-9-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2184-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2184-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2184-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2184-2-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2600-55-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2600-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2600-39-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2600-54-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2600-57-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2600-61-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2600-73-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2600-70-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2600-72-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2600-74-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2744-37-0x0000000000400000-0x0000000000514000-memory.dmp

Filesize
1.1MB

Download
memory/2744-32-0x0000000000400000-0x0000000000514000-memory.dmp

Filesize
1.1MB

Download
memory/2744-31-0x0000000000590000-0x0000000000621000-memory.dmp

Filesize
580KB

Download